Powder metallurgy gear press forming device

Abstract

The application provides a powder metallurgy gear press forming device and relates to the technical field of powder metallurgy gears, which comprises a forming press part, a movable forming part, a powder adding part and a control protection part, wherein the movable forming part is installed on the forming press part, the powder adding part is installed on the movable forming part, and the control protection part is installed on the forming press part; when two U-shaped stress frames are separated from corresponding arc-shaped auxiliary blocks, the two U-shaped stress frames move downward under the action of two spiral springs, so that the circular auxiliary disc reciprocally presses the powder in the powder adding hopper, and the powder in the movable forming seat is ensured to be in a filled state, which is beneficial to improving the gear press forming precision; and the problem that a reciprocating pressing structure is generally absent, the powder cannot be reciprocally pressed, the powder in the mold is prone to being in an unfilled state, and the machining precision of the gear is affected is solved.

Description

Technical Field

[0001] This invention belongs to the field of powder metallurgy gear technology, and more specifically, relates to a powder metallurgy gear pressing and forming device. Background Technology

[0002] Powder metallurgy gears are precision parts made from metal powder through processes such as powder preparation, mixing, molding, sintering, and post-processing. They have high mass production efficiency, with a single mold capable of pressing tens of thousands of pieces with a precision of 7-9 levels. They are widely used in the automotive, machinery, and other fields.

[0003] The current molding equipment still has the following problems: 1. It generally lacks a reciprocating pressing structure, which cannot reciprocate the pressing action on the powder, resulting in the powder in the mold being incomplete and affecting the processing accuracy of the gears; 2. It usually does not have a protective warning function, which makes it easy for workers' hands to get close to the molding area, posing a certain safety hazard. Summary of the Invention

[0004] To address the issues of incomplete powder filling in the mold and workers' hands easily getting close to the molding area, this invention provides a powder metallurgy gear pressing and molding device.

[0005] This invention provides a powder metallurgy gear pressing and forming device, comprising: a forming and pressing section, a movable forming section, a powder adding section, and a control and protection section; the movable forming section is mounted on the forming and pressing section; the movable forming section includes: a movable forming seat; the powder adding section is mounted on the movable forming section; the powder adding section includes: arc-shaped auxiliary blocks, U-shaped force-bearing frames, and circular auxiliary disks; the arc-shaped auxiliary blocks are arranged in two rows, and the two rows of arc-shaped auxiliary blocks are fixedly mounted on the top of the movable forming seat; the outer ends of the two U-shaped force-bearing frames are in contact with the movable forming seat, and the outer ends of the two U-shaped force-bearing frames and the two rows of arc-shaped auxiliary blocks are on the same plane; the circular auxiliary disks are fixedly mounted on the inner ends of the two U-shaped force-bearing frames; the control and protection section is mounted on the forming and pressing section; the control and protection section includes: a movable protective plate and a pressing and positioning frame; the pressing and positioning frame is fixedly mounted on the movable protective plate, and a positioning groove is formed on the pressing and positioning frame.

[0006] Furthermore, the molding and pressing unit includes: a molding and pressing frame, a circular guide rod a, a position control seat, and a hydraulic cylinder a; there are two circular guide rods a, and the two circular guide rods a are fixedly installed on the molding and pressing frame; the position control seat is slidably installed on the two circular guide rods a; the hydraulic cylinder a is fixedly installed on the molding and pressing frame, and the output shaft of the hydraulic cylinder a is fixedly connected to the position control seat.

[0007] Furthermore, the molding pressing unit also includes: a hydraulic cylinder b, a mounting guide seat, a molding pressing head, and a molding pressing seat; the hydraulic cylinder b is fixedly mounted on a position control seat; the mounting guide seat is fixedly mounted on the output shaft of the hydraulic cylinder b; the molding pressing head is fixedly mounted on the bottom of the mounting guide seat; the molding pressing seat is fixedly mounted on the molding pressing frame, and the molding pressing seat is located directly below the molding pressing head.

[0008] Furthermore, the movable forming part also includes: circular guide rods b and circular guide rods c; there are four circular guide rods b, and the four circular guide rods b are slidably mounted on the forming pressing frame; the movable forming seat is fixedly mounted on the top of the four circular guide rods b; there are two circular guide rods c, and the two circular guide rods c are fixedly mounted on the top of the movable forming seat, and the two circular guide rods c are slidably connected to the mounting guide seat.

[0009] Furthermore, the movable forming part also includes: a rectangular connecting plate, a hydraulic cylinder c, and an inclined discharge plate; the rectangular connecting plate is fixedly installed at the bottom of four circular guide rods b; the hydraulic cylinder c is fixedly installed on the forming pressing frame, and the output shaft of the hydraulic cylinder c is fixedly connected to the rectangular connecting plate; the inclined discharge plate is fixedly installed on the front side of the movable forming seat.

[0010] Furthermore, the powder adding unit also includes: an L-shaped mounting bracket, a hydraulic cylinder d, a powder adding hopper, and a pipe positioning pin; the L-shaped mounting bracket is fixedly mounted on the rear side of the movable forming seat; the hydraulic cylinder d is fixedly mounted on the L-shaped mounting bracket; the powder adding hopper is slidably mounted on the movable forming seat, and the powder adding hopper is fixedly connected to the output shaft of the hydraulic cylinder d; the pipe positioning pin is threadedly connected to the powder adding hopper.

[0011] Furthermore, the powder adding section also includes: a triangular pusher, a rectangular guide, and a circular guide shaft; the triangular pusher is fixedly installed on the front side of the powder adding hopper, and the bottom of the triangular pusher contacts the movable forming seat; there are two rectangular guides, and the two rectangular guides are fixedly installed on the powder adding hopper; there are two circular guide shafts, and the two circular guide shafts are slidably installed on the two rectangular guides.

[0012] Furthermore, the powder adding section also includes: a helical spring; two U-shaped force-bearing frames are provided, and the two U-shaped force-bearing frames are slidably installed on the powder adding hopper, and the tops of the two U-shaped force-bearing frames are fixedly connected to two circular guide shafts; two helical springs are provided, and the two helical springs are sleeved on the outside of the two circular guide shafts, and the two helical springs are located between the two rectangular guide frames and the two U-shaped force-bearing frames.

[0013] Furthermore, the control and protection unit also includes: a control box and control buttons; the control box is fixedly installed on the left side of the forming and pressing frame, and the control box is electrically connected to hydraulic cylinders a, b, c and d; the movable protective plate is slidably installed on the forming and pressing frame; there are two control buttons, and the two control buttons are fixedly installed inside the forming and pressing frame, and the two control buttons are electrically connected to the control box.

[0014] Furthermore, the control and protection unit also includes: a pressing positioning block; there are two pressing positioning blocks, and the two pressing positioning blocks are fixedly installed on the right side of the two control buttons; the upper pressing positioning block is inserted into the positioning groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, when the output shaft of hydraulic cylinder a extends, the position control seat drives the forming pressing head to move to the pressing position; when the output shaft of hydraulic cylinder b extends, the forming pressing head moves downward, which plays a pressing and forming role on the powder between the forming pressing head and the forming pressing seat, which is beneficial to the efficient processing of gears. In addition, when the output shaft of hydraulic cylinder C extends, the top surface of the forming pressing seat is flush with the movable forming seat, realizing the automatic ejection of the gear after pressing and forming. The gear after pressing and forming can slide out automatically along the inclined discharge plate.

[0016] 2. In this invention, when the output shaft of the hydraulic cylinder d extends, the powder in the powder adding hopper can automatically enter the movable forming seat, realizing automatic powder adding; at the same time, the triangular push frame can automatically push the pressed and formed gear to the inclined discharge plate, realizing continuous gear processing; the pipe positioning pin plays a positioning role for the external powder pipe, so that the external powder pipe can move simultaneously with the powder adding hopper. In addition, when the output shaft of the hydraulic cylinder d extends or resets, the two rows of arc-shaped auxiliary blocks can push the two U-shaped force-bearing frames to move upward; when the two U-shaped force-bearing frames separate from the corresponding arc-shaped auxiliary blocks, the two U-shaped force-bearing frames move downward under the action of two helical springs, so that the circular auxiliary disc reciprocates to press the powder in the powder adding hopper, ensuring that the powder in the movable forming seat is in a full state, which is beneficial to improving the gear pressing forming accuracy.

[0017] 3. In this invention, the control box controls hydraulic cylinders a, b, c, and d, thus achieving automated gear processing; when the movable protective plate is at the bottom, it can shield the front of the pressing and forming area, preventing workers' hands from getting close; when the movable protective plate is at the top, it facilitates workers' maintenance of the device. Furthermore, when the movable protective plate is in the lower position, it can automatically press the control button below. At this time, the control box controls hydraulic cylinders a, b, c, and d to continuously reciprocate. When the movable protective plate is in the upper position, it can automatically press the control button above. At this time, the control box controls hydraulic cylinders a, b, c, and d to stop working. When the movable protective plate is in the upper position, the upper pressing positioning block is inserted into the positioning groove, which plays a positioning role for the movable protective plate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A schematic diagram of the molding and pressing part of the present invention is shown; Figure 3 A schematic diagram of the structure of the movable forming part of the present invention is shown; Figure 4 The present invention is shown. Figure 1 A schematic diagram of the structure from the rear side view; Figure 5 A schematic diagram of the structure of the movable molding seat and powder addition part of the present invention is shown; Figure 6 The present invention is shown. Figure 1 A schematic diagram of the central cross-section structure; Figure 7 The present invention is shown. Figure 6 A magnified schematic diagram of a portion of region A in the middle; Figure 8 The present invention is shown. Figure 1 A magnified schematic diagram of a portion of region B in the middle; Figure 9 The present invention is shown. Figure 6 A schematic diagram of the cross-sectional structure along the CC direction; Figure 10 The present invention is shown. Figure 9 A magnified schematic diagram of the structure of region D in the middle.

[0021] List of reference numerals in the attached diagram: 100. Molding pressing section; 101. Molding pressing frame; 102. Circular guide rod a; 103. Position control seat; 104. Hydraulic cylinder a; 105. Hydraulic cylinder b; 106. Mounting guide seat; 107. Molding pressing head; 108. Molding pressing seat; 200. Movable forming part; 201. Circular guide rod b; 202. Movable forming base; 203. Circular guide rod c; 204. Rectangular connecting plate; 205. Hydraulic cylinder c; 206. Inclined discharge plate; 300. Powder addition section; 301. L-shaped mounting bracket; 302. Hydraulic cylinder d; 303. Powder addition hopper; 304. Pipe positioning pin; 305. Triangular pusher frame; 306. Arc-shaped auxiliary block; 307. Rectangular guide frame; 308. Circular guide shaft; 309. U-shaped force-bearing frame; 310. Circular auxiliary disc; 311. Helical spring; 400. Control and protection unit; 401. Control box; 402. Movable protective plate; 403. Control button; 404. Press positioning block; 405. Press positioning frame; 4051. Positioning groove. Detailed Implementation

[0022] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0023] Example: Please refer to Figures 1 to 10 As shown: The present invention provides a powder metallurgy gear pressing and forming apparatus, comprising: a forming and pressing section 100, a movable forming section 200, a powder adding section 300, and a control and protection section 400; the movable forming section 200 is mounted on the forming and pressing section 100; the powder adding section 300 is mounted on the movable forming section 200; and the control and protection section 400 is mounted on the forming and pressing section 100.

[0024] In this embodiment of the disclosure, such as Figure 2 , Figure 3 and Figure 6As shown, the molding pressing unit 100 includes: a molding pressing frame 101, circular guide rods a102, a position control seat 103, and a hydraulic cylinder a104; two circular guide rods a102 are provided, and the two circular guide rods a102 are fixedly installed on the molding pressing frame 101; the position control seat 103 is slidably installed on the two circular guide rods a102; the hydraulic cylinder a104 is fixedly installed on the molding pressing frame 101, and the output shaft of the hydraulic cylinder a104 is fixedly connected to the position control seat 103; the molding pressing unit 100 also includes: a hydraulic cylinder b105, a mounting guide seat 106, a molding pressing head 107, and a molding pressing seat 108; the hydraulic cylinder b105 is fixedly installed on the position control seat 103; the mounting guide seat 106 is fixedly installed on the output shaft of the hydraulic cylinder b105; the molding pressing head 107 is fixedly installed on the bottom of the mounting guide seat 106; the molding pressing seat 108 is fixedly installed on the molding pressing frame 101, and the molding pressing seat 108 is located directly below the molding pressing head 107.

[0025] The movable forming section 200 includes: four circular guide rods b201, a movable forming seat 202, and four circular guide rods c203. The four circular guide rods b201 are slidably mounted on the forming press frame 101. The movable forming seat 202 is fixedly mounted on the top of the four circular guide rods b201. Two circular guide rods c203 are provided, and both are fixedly mounted on the top of the movable forming seat 202, and are slidably connected to the mounting guide seat 106. The movable forming section 200 also includes: a rectangular connecting plate 204, a hydraulic cylinder c205, and an inclined discharge plate 206. The rectangular connecting plate 204 is fixedly mounted on the bottom of the four circular guide rods b201. The hydraulic cylinder c205 is fixedly mounted on the forming press frame 101, and its output shaft is fixedly connected to the rectangular connecting plate 204. The inclined discharge plate 206 is fixedly mounted on the front side of the movable forming seat 202. The specific functions of the molding pressing section 100 and the movable molding section 200 are as follows: Since the position control seat 103 is slidably mounted on the two circular guide rods a102, and the hydraulic cylinder a104 is fixedly mounted on the molding pressing frame 101, and the output shaft of the hydraulic cylinder a104 is fixedly connected to the position control seat 103, when the output shaft of the hydraulic cylinder a104 extends, the position control seat 103 drives the molding pressing head 107 to move to the pressing position; since the molding pressing head 107 is fixedly mounted on the bottom of the mounting guide seat 106, and the molding pressing seat 108 is fixedly mounted on the molding pressing frame 101, and the molding pressing seat 108 is located directly below the molding pressing head 107, when the output shaft of the hydraulic cylinder b105 extends, the molding pressing head 107 moves downward, which plays a pressing and molding role on the powder between the molding pressing head 107 and the molding pressing seat 108, which is beneficial to the efficient processing of gears; Furthermore, since the rectangular connecting plate 204 is fixedly installed at the bottom of the four circular guide rods b201, and the hydraulic cylinder c205 is fixedly installed on the forming pressing frame 101, and the output shaft of the hydraulic cylinder c205 is fixedly connected to the rectangular connecting plate 204, when the output shaft of the hydraulic cylinder c205 extends, the top surface of the forming pressing seat 108 is flush with the movable forming seat 202, thus realizing the automatic ejection of the gear after pressing and forming; and since the inclined discharge plate 206 is fixedly installed on the front side of the movable forming seat 202, the gear after pressing and forming can automatically slide out along the inclined discharge plate 206.

[0026] In this embodiment of the disclosure, such as Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the powder adding unit 300 includes: an L-shaped mounting bracket 301, a hydraulic cylinder d302, a powder adding hopper 303, and a pipe positioning pin 304; the L-shaped mounting bracket 301 is fixedly mounted on the rear side of the movable forming base 202; the hydraulic cylinder d302 is fixedly mounted on the L-shaped mounting bracket 301; the powder adding hopper 303 is slidably mounted on the movable forming base 202, and the powder adding hopper 303 is fixedly connected to the output shaft of the hydraulic cylinder d302; the pipe positioning pin 304 is threadedly connected to the powder adding hopper 303. 03; The powder adding section 300 also includes: a triangular pusher 305, an arc-shaped auxiliary block 306, a rectangular guide frame 307, and a circular guide shaft 308; the triangular pusher 305 is fixedly installed on the front side of the powder adding hopper 303, and the bottom of the triangular pusher 305 contacts the movable forming seat 202; there are two rows of arc-shaped auxiliary blocks 306, and the two rows of arc-shaped auxiliary blocks 306 are fixedly installed on the top of the movable forming seat 202; there are two rectangular guide frames 307, and the two rectangular guide frames... The rectangular guide frame 307 is fixedly installed on the powder adding hopper 303; two circular guide shafts 308 are provided, and the two circular guide shafts 308 are slidably installed on the two rectangular guide frames 307; the powder adding part 300 also includes: a U-shaped force-bearing frame 309, a circular auxiliary disk 310, and a helical spring 311; two U-shaped force-bearing frames 309 are provided, and the two U-shaped force-bearing frames 309 are slidably installed on the powder adding hopper 303, and the tops of the two U-shaped force-bearing frames 309 are fixedly connected to the two circular guide shafts 308. Fixed connection; the outer ends of the two U-shaped force-bearing frames 309 are in contact with the movable forming seat 202, and the outer ends of the two U-shaped force-bearing frames 309 are on the same plane as the two rows of arc-shaped auxiliary blocks 306; the circular auxiliary disk 310 is fixedly installed on the inner ends of the two U-shaped force-bearing frames 309; there are two helical springs 311, and the two helical springs 311 are sleeved on the outside of the two circular guide shafts 308, and the two helical springs 311 are located between the two rectangular guide frames 307 and the two U-shaped force-bearing frames 309.

[0027] The specific function of the powder adding unit 300 is as follows: Since the powder adding hopper 303 is slidably mounted on the movable forming seat 202, and the powder adding hopper 303 is fixedly connected to the output shaft of the hydraulic cylinder d302, and the triangular push frame 305 is fixedly mounted on the front side of the powder adding hopper 303, when the output shaft of the hydraulic cylinder d302 extends, the powder in the powder adding hopper 303 can automatically enter the movable forming seat 202, realizing automatic powder adding; at the same time, the triangular push frame 305 can automatically push the pressed and formed gear onto the inclined discharge plate 206, realizing continuous gear processing; and since the pipe positioning pin 304 is threadedly connected to the powder adding hopper 303, it plays a positioning role for the external powder pipe, so that the external powder pipe can move simultaneously with the powder adding hopper 303. Furthermore, since the two rows of arc-shaped auxiliary blocks 306 are fixedly installed on the top of the movable forming seat 202, and the outer ends of the two U-shaped force-bearing frames 309 are in contact with the movable forming seat 202, and the outer ends of the two U-shaped force-bearing frames 309 are on the same plane as the two rows of arc-shaped auxiliary blocks 306, when the output shaft of the hydraulic cylinder d302 extends or resets, the two rows of arc-shaped auxiliary blocks 306 can push the two U-shaped force-bearing frames 309 to move upward; and since the circular auxiliary disk 310 is fixedly installed on the inner ends of the two U-shaped force-bearing frames 309, and the two helical springs 311 is sleeved on the outside of the two circular guide shafts 308, and the two helical springs 311 are located between the two rectangular guide frames 307 and the two U-shaped force-bearing frames 309. When the two U-shaped force-bearing frames 309 are separated from the corresponding arc-shaped auxiliary blocks 306, the two U-shaped force-bearing frames 309 move downward under the action of the two helical springs 311, so that the circular auxiliary disk 310 reciprocates to press the powder in the powder adding hopper 303, ensuring that the powder in the movable forming seat 202 is in a full state, which is beneficial to improving the gear pressing forming accuracy.

[0028] In this embodiment of the disclosure, such as Figure 1 , Figure 4 and Figure 10As shown, the control and protection unit 400 includes: a control box 401, a movable protective plate 402, and control buttons 403; the control box 401 is fixedly installed on the left side of the molding and pressing frame 101, and the control box 401 is electrically connected to hydraulic cylinders a104, b105, c205, and d302; the movable protective plate 402 is slidably installed on the molding and pressing frame 101; there are two control buttons 403, and the two control buttons 403 are fixedly installed inside the molding and pressing frame 101. The control buttons 403 are arranged vertically and are electrically connected to the control box 401. The control protection unit 400 also includes: a pressing positioning block 404 and a pressing positioning frame 405. There are two pressing positioning blocks 404, and the two pressing positioning blocks 404 are fixedly installed on the right side of the two control buttons 403. The pressing positioning frame 405 is fixedly installed on the movable protective plate 402, and a positioning groove 4051 is opened on the pressing positioning frame 405, and the pressing positioning block 404 above is inserted into the positioning groove 4051. The specific functions of the control and protection unit 400 are as follows: Because the control box 401 is electrically connected to hydraulic cylinders a104, b105, c205, and d302, it controls these cylinders, thus achieving automated gear processing. Furthermore, because the movable protective plate 402 is slidably mounted on the forming and pressing frame 101, when the movable protective plate 402 is at the bottom, it can shield the front of the forming and pressing area, preventing workers' hands from approaching. When the movable protective plate 402 is at the top, it facilitates maintenance by workers. Furthermore, since the two control buttons 403 are fixedly installed inside the forming pressing frame 101, and the two pressing positioning blocks 404 are fixedly installed to the right of the two control buttons 403, and the pressing positioning frame 405 is fixedly installed on the movable protective plate 402, when the movable protective plate 402 is in the lower position, the movable protective plate 402 can automatically press the control button 403 below. At this time, the control box 401 controls the hydraulic cylinders a104, b105, c205 and d302 to continuously move... Resuming operation; when the movable protective plate 402 is in the upper position, the movable protective plate 402 can automatically press the control button 403 above. At this time, the control box 401 controls the hydraulic cylinders a104, b105, c205 and d302 to stop working; since the positioning frame 405 has a positioning groove 4051, when the movable protective plate 402 is in the upper position, the upper pressing positioning block 404 is inserted into the positioning groove 4051, which plays a positioning role for the movable protective plate 402.

[0029] The specific usage and function of this embodiment are as follows: In use, the molding and pressing frame 101 is first fixedly installed with bolts. Then, the control box 401 is connected to an external power source. Next, the external powder pipe is connected to the powder adding hopper 303. Then, the pipe positioning pin 304 is tightened with a wrench, which positions the external powder pipe, allowing it to move simultaneously with the powder adding hopper 303. When the operator pulls down the movable protective plate 402, it automatically presses the control button 403. At this time, the control box 401 controls hydraulic cylinders a104, b105, c205, and d302 to continuously reciprocate. The movable protective plate 402 can shield the front of the pressing and forming area, preventing workers' hands from getting close. When the output shaft of hydraulic cylinder a104 extends, the position control seat 103 drives the forming pressing head 107 to move to the pressing position. When the output shaft of hydraulic cylinder b105 extends, the forming pressing head 107 moves downward, pressing and forming the powder between the forming pressing head 107 and the forming pressing seat 108, which is beneficial to the efficient processing of gears. Since the pressed and formed gear is above the forming pressing seat 108 and is also inside the movable forming seat 202, when the output shaft of hydraulic cylinder c205 extends, the top surface of the forming pressing seat 108 is flush with the movable forming seat 202, realizing the pressing and forming of the gear. The automatic ejection of the pressed gear allows it to slide automatically along the inclined discharge plate 206. When the output shaft of the hydraulic cylinder d302 extends, the powder in the powder addition hopper 303 automatically enters the movable forming seat 202, achieving automatic powder addition. Simultaneously, the triangular pusher 305 automatically pushes the pressed gear onto the inclined discharge plate 206, achieving continuous gear processing. When the output shaft of the hydraulic cylinder d302 extends or resets, the two rows of arc-shaped auxiliary blocks 306 push the two U-shaped force-bearing frames 309 upward. When the two U-shaped force-bearing frames 309 separate from the corresponding arc-shaped auxiliary blocks 306, the two U-shaped force-bearing frames 309 move downward under the action of the two helical springs 311, causing the circular auxiliary disk 31... The powder in the powder adding hopper 303 is pressed repeatedly to ensure that the powder in the movable forming seat 202 is full, which helps to improve the gear pressing and forming accuracy. After use, the operator pulls the movable protective plate 402 upward. When the movable protective plate 402 is in the upper position, it is convenient for the operator to maintain the device. When the movable protective plate 402 is in the upper position, it can automatically press the control button 403 above. At this time, the control box 401 controls the hydraulic cylinders a104, b105, c205 and d302 to stop working. When the movable protective plate 402 is in the upper position, the upper pressing positioning block 404 is inserted into the positioning groove 4051, which plays a positioning role for the movable protective plate 402.

[0030] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0031] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0032] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A powder metallurgy gear pressing and forming apparatus, comprising: The device comprises a molding pressing section (100), a movable molding section (200), a powder adding section (300), and a control and protection section (400); characterized in that the movable molding section (200) is mounted on the molding pressing section (100); the movable molding section (200) includes: a movable molding seat (202); the powder adding section (300) is mounted on the movable molding section (200); the powder adding section (300) includes: an arc-shaped auxiliary block (306), a U-shaped force-bearing frame (309), and a circular auxiliary disk (310); the arc-shaped auxiliary blocks (306) are arranged in two rows, and the two rows of arc-shaped auxiliary blocks (306) are fixedly mounted on the movable molding seat (202). The top of the two U-shaped support frames (309) is in contact with the movable forming seat (202), and the outer ends of the two U-shaped support frames (309) are on the same plane as the two rows of arc-shaped auxiliary blocks (306); the circular auxiliary disk (310) is fixedly installed on the inner end of the two U-shaped support frames (309); the control and protection part (400) is installed on the forming pressing part (100); the control and protection part (400) includes: a movable protective plate (402) and a pressing positioning frame (405); the pressing positioning frame (405) is fixedly installed on the movable protective plate (402), and a positioning groove (4051) is provided on the pressing positioning frame (405); The powder adding part (300) further includes: an L-shaped mounting bracket (301), a hydraulic cylinder d (302), a powder adding hopper (303), and a pipe positioning pin (304); the L-shaped mounting bracket (301) is fixedly mounted on the rear side of the movable forming seat (202); the hydraulic cylinder d (302) is fixedly mounted on the L-shaped mounting bracket (301); the powder adding hopper (303) is slidably mounted on the movable forming seat (202), and the powder adding hopper (303) is fixedly connected to the output shaft of the hydraulic cylinder d (302); the pipe positioning pin (304) is threadedly connected to the powder adding hopper (303); the powder adding part (300) further includes: a triangular pusher (305), a rectangular guide (307), and a circular guide shaft (308); the triangular pusher (305) is fixedly mounted on the front side of the powder adding hopper (303), and the bottom of the triangular pusher (305) is connected to the movable forming seat (202). The seat (202) is in contact; there are two rectangular guide frames (307), and the two rectangular guide frames (307) are fixedly installed on the powder adding hopper (303); there are two circular guide shafts (308), and the two circular guide shafts (308) are slidably installed on the two rectangular guide frames (307); the powder adding part (300) also includes: a helical spring (311); there are two U-shaped force-bearing frames (309), and the two U-shaped force-bearing frames (309) are slidably installed on the powder adding hopper (303), and the top of the two U-shaped force-bearing frames (309) is fixedly connected to the two circular guide shafts (308); there are two helical springs (311), and the two helical springs (311) are sleeved on the outside of the two circular guide shafts (308), and the two helical springs (311) are located between the two rectangular guide frames (307) and the two U-shaped force-bearing frames (309).

2. The powder metallurgy gear pressing and forming device according to claim 1, characterized in that, The molding and pressing unit (100) includes: a molding and pressing frame (101), a circular guide rod a (102), a position control seat (103), and a hydraulic cylinder a (104); there are two circular guide rods a (102), and the two circular guide rods a (102) are fixedly installed on the molding and pressing frame (101); the position control seat (103) is slidably installed on the two circular guide rods a (102); the hydraulic cylinder a (104) is fixedly installed on the molding and pressing frame (101), and the output shaft of the hydraulic cylinder a (104) is fixedly connected to the position control seat (103).

3. The powder metallurgy gear pressing and forming device according to claim 2, characterized in that, The molding pressing unit (100) further includes: a hydraulic cylinder b (105), a mounting guide seat (106), a molding pressing head (107), and a molding pressing seat (108); the hydraulic cylinder b (105) is fixedly mounted on a position control seat (103); the mounting guide seat (106) is fixedly mounted on the output shaft of the hydraulic cylinder b (105); the molding pressing head (107) is fixedly mounted on the bottom of the mounting guide seat (106); the molding pressing seat (108) is fixedly mounted on a molding pressing frame (101), and the molding pressing seat (108) is located directly below the molding pressing head (107).

4. The powder metallurgy gear pressing and forming device according to claim 3, characterized in that, The movable forming part (200) further includes: a circular guide rod b (201) and a circular guide rod c (203); there are four circular guide rods b (201), and the four circular guide rods b (201) are slidably mounted on the forming pressing frame (101); the movable forming seat (202) is fixedly mounted on the top of the four circular guide rods b (201); there are two circular guide rods c (203), and the two circular guide rods c (203) are fixedly mounted on the top of the movable forming seat (202), and the two circular guide rods c (203) are slidably connected to the mounting guide seat (106).

5. The powder metallurgy gear pressing and forming device according to claim 4, characterized in that, The movable forming part (200) further includes: a rectangular connecting plate (204), a hydraulic cylinder c (205), and an inclined discharge plate (206); the rectangular connecting plate (204) is fixedly installed at the bottom of four circular guide rods b (201); the hydraulic cylinder c (205) is fixedly installed on the forming pressing frame (101), and the output shaft of the hydraulic cylinder c (205) is fixedly connected to the rectangular connecting plate (204); the inclined discharge plate (206) is fixedly installed on the front side of the movable forming seat (202).

6. The powder metallurgy gear pressing and forming apparatus according to claim 5, characterized in that, The control and protection unit (400) further includes: a control box (401) and control buttons (403); the control box (401) is fixedly installed on the left side of the molding and pressing frame (101), and the control box (401) is electrically connected to hydraulic cylinder a (104), hydraulic cylinder b (105), hydraulic cylinder c (205) and hydraulic cylinder d (302); the movable protective plate (402) is slidably installed on the molding and pressing frame (101); there are two control buttons (403), and the two control buttons (403) are fixedly installed inside the molding and pressing frame (101), and the two control buttons (403) are electrically connected to the control box (401).

7. The powder metallurgy gear pressing and forming apparatus according to claim 6, characterized in that, The control and protection unit (400) further includes: a pressing positioning block (404); there are two pressing positioning blocks (404), and the two pressing positioning blocks (404) are fixedly installed on the right side of the two control buttons (403); the upper pressing positioning block (404) is inserted into the positioning groove (4051).

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